559
FNUS75 KREV 100415
FWSREV

Spot Forecast for Twin Lakes RX...USFS
National Weather Service Reno NV
815 PM PST Tue Dec 9 2025

Forecast is based on ignition time of 0700 PST on December 10.
If conditions become unrepresentative...contact the National
Weather Service in Reno.

.DISCUSSION...

* High pressure overhead will allow dry conditions and light
  winds with limited ventilation to persist through this week.

* Models show a brief pattern change early next week allowing for
  the potential for light wintry precipitation and breezier winds.

* Above normal temperatures continue through this work week with
  signals seen for this trend to persist into mid to late next
  week.

.WEDNESDAY...

Sky/Weather.........Sunny.
Temperature.........38-40 at ignition...Max 63-65.
RH..................29-30% at ignition...Min 20-21%.
20-Foot Winds.......Winds southwest at 6 mph at
                    ignition...otherwise Upslope 3-7 mph.
Chc Wetting Rain....0%.
Chance of thunder...0%.
Mixing Height.......2400-3200 ft agl.
Transport Winds.....Light winds.
Ventilation.........Marginal.

TIME (PST)      7 AM   9 AM   11 AM  1 PM   3 PM
Sky (%).........2      2      1      0      0
Weather cov.....
Weather type....NONE   NONE   NONE   NONE   NONE
Tstm cov........
CWR.............0      0      0      0      0
Chc of thdr (%).0      0      0      0      0
Temp............38     45     58     63     61
RH..............29     24     27     21     35
20 ft wind......SW 6   SW 6   SW 3   W 2    W 2
20 ft wind gust.10     10     10     5      5
Mx ht msl (kft).2.5    2.5    2.8    3.2    3.2
Transport wind..S 5    S 5    SW 5   W 5    W 5
Vrate kt-ft/1K..12     12     14     19     19
Ventrate Cat....MRGL   MRGL   MRGL   MRGL   MRGL

.WEDNESDAY NIGHT...

Sky/Weather.........Clear.
Temperature.........Min 40-41.
RH..................Max 40-45%.
20-Foot Winds.......Downslope 2-6 mph.
Chc Wetting Rain....0%.
Chance of thunder...0%.
Mixing Height.......2400-2600 ft agl.
Transport Winds.....Light winds becoming west around 10 mph
                    overnight.
Ventilation.........Marginal.

TIME (PST)      4 PM   6 PM   8 PM   10 PM  MIDNGT 2 AM
Sky (%).........3      3      5      7      7      7
Weather cov.....
Weather type....NONE   NONE   NONE   NONE   NONE   NONE
Tstm cov........
CWR.............0      0      0      0      0      0
Chc of thdr (%).0      0      0      0      0      0
Temp............56     47     46     45     43     42
RH..............35     35     36     37     38     39
20 ft wind......W 2    W 2    W 3    W 5    W 5    W 5
20 ft wind gust.5      5      10     10     10     10
Mx ht msl (kft).2.5    2.5    2.5    2.5    2.5    2.5
Transport wind..W 5    W 5    W 5    W 10   W 10   W 10
Vrate kt-ft/1K..15     15     15     17     17     17
Ventrate Cat....MRGL   MRGL   MRGL   MRGL   MRGL   MRGL

.THURSDAY...

Sky/Weather.........Sunny.
Temperature.........Max 63-64.
RH..................Min 25-30%.
20-Foot Winds.......Upslope 3-7 mph.
Chc Wetting Rain....0%.
Chance of thunder...0%.
Mixing Height.......2700-3700 ft agl.
Transport Winds.....Light winds.
Ventilation.........Marginal.

TIME (PST)      4 AM   6 AM   8 AM   10 AM  NOON   2 PM
Sky (%).........7      7      4      2      2      1
Weather cov.....
Weather type....NONE   NONE   NONE   NONE   NONE   NONE
Tstm cov........
CWR.............0      0      0      0      0      0
Chc of thdr (%).0      0      0      0      0      0
Temp............41     40     43     51     60     62
RH..............40     39     37     34     30     32
20 ft wind......SW 5   SW 5   W 5    W 2    W 2    NW 2
20 ft wind gust.10     10     10     5      5      5
Mx ht msl (kft).2.5    2.5    2.4    2.6    2.6    3.7
Transport wind..W 5    W 5    W 5    NW 5   NW 5   NW 5
Vrate kt-ft/1K..15     15     15     10     10     18
Ventrate Cat....MRGL   MRGL   MRGL   MRGL   MRGL   MRGL

$$
Forecaster...Chyba
Requested by...Ryan Bell
Type of request...PRESCRIBED
.TAG 2527134.2/REV
.DELDT 12/10/25
.FormatterVersion 2.0.0
.EMAIL ryan.bell@usda.gov